I'm with Vivi...bring back Adam and Joe! Can't stand Richard Bacon, though, so my radio gets switched to R4 when he is on. I'm exclusively 6 Music apart from that, though.
What to listen to in the car is much more of a dilemma, though - only recently got a car and already we're sick of XFM, Absolute, etc. If it's not Radio 4 we plug in an iPod...perhaps we're not quite ready for R2 yet?